Aluminum plastic film and method for producing the same

Abstract

An aluminum plastic film and method for producing the same are provided. The method includes a preparing process implemented by providing an aluminum foil metal film having a first surface and a second layer; a polyurethane glue coating process implemented by coating a polyurethane glue onto the first surface of the aluminum foil metal film; an outer-layer polymer film pasting process implemented by pasting an outer-layer polymer film onto the first surface through the polyurethane glue; a polyolefin glue coating process implemented by coating a polyolefin glue onto the second surface of the aluminum foil metal film; and an inner-layer polymer film pasting process implemented by pasting an inner-layer polymer film onto the second surface through the polyolefin glue to form an aluminum plastic film. A ratio between a thickness of the inner-layer polymer film and a thickness of the outer-layer polymer film is between 1.6 and 5.5.

What is claimed is: 
     
         1 . A method for producing an aluminum plastic film, comprising:
 a preparing process implemented by providing an aluminum foil metal film having a first surface and a second surface opposite to each other;   a polyurethane glue coating process implemented by coating a polyurethane glue onto the first surface of the aluminum foil metal film;   an outer-layer polymer film pasting process implemented by pasting an outer-layer polymer film onto the first surface through the polyurethane glue, wherein the outer-layer polymer film is at least one of a nylon polymer film, a polyester polymer film, and a multilayer nylon/polyester polymer film;   a polyolefin glue coating process implemented by coating a polyolefin glue onto the second surface of the aluminum foil metal film; and   an inner-layer polymer film pasting process implemented by pasting an inner-layer polymer film onto the second surface through the polyolefin glue to form an aluminum plastic film, wherein the inner-layer polymer film is a polyolefin polymer film, wherein a ratio between a thickness of the inner-layer polymer film and a thickness of the outer-layer polymer film is between 1.6 and 5.5.   
     
     
         2 . The method according to  claim 1 , wherein, before the outer-layer polymer film pasting process, the method further includes a preheating process implemented by preheating the outer-layer polymer film at a temperature between 140° C. and 180° C. for 10 seconds to 30 seconds, wherein the thickness of the outer-layer polymer film is between 20 μm to 25 μm. 
     
     
         3 . The method according to  claim 2 , wherein, after the preheating process, a machine direction shrinkage rate of the outer-layer polymer film is less than or equal to 1%, and a transverse direction shrinkage rate of the outer-layer polymer film is less than or equal to 1%. 
     
     
         4 . The method according to  claim 1 , wherein the thickness of the outer-layer polymer film is between 10 μm and 20 μm. 
     
     
         5 . The method according to  claim 1 , wherein, after the outer-layer polymer film pasting process, the method further includes a polyurethane glue aging process implemented by setting the aluminum foil metal film pasted with the outer-layer polymer film in an environment having a temperature between 45° C. and 65° C. for 84 hours to 108 hours. 
     
     
         6 . The method according to  claim 5 , wherein the polyurethane glue aging process is divided into a first polyurethane glue aging stage, a second polyurethane glue aging stage, and a third polyurethane glue aging stage, wherein a setting time period in the third polyurethane glue aging stage is greater than a setting time period in the first polyurethane glue aging stage and a setting time period in the second polyurethane glue aging stage, wherein a setting temperature in the third polyurethane glue aging stage is greater than a setting temperature in the second polyurethane glue aging stage, and the setting temperature in the second polyurethane glue aging stage is greater than a setting temperature in the first polyurethane glue aging stage. 
     
     
         7 . The method according to  claim 1 , wherein, after the inner-layer polymer film pasting process, the method further includes a polyolefin glue aging process implemented by setting the aluminum foil metal film pasted with the inner-layer polymer film in an environment having a temperature between 40° C. and 55° C. for 84 hours to 108 hours. 
     
     
         8 . The method according to  claim 7 , wherein the polyolefin glue aging process is divided into a first polyolefin glue aging stage and a second polyolefin glue aging stage, wherein a setting temperature in the second polyolefin glue aging stage is greater than a setting temperature in the first polyolefin glue aging stage, and a setting time period in the second polyolefin glue aging is greater than or equal to a setting time period in the first polyolefin glue aging stage. 
     
     
         9 . The method according to  claim 1 , wherein, after being punched with a punching depth of 5 mm, an appearance of the aluminum plastic film does not have warpage or holes formed by breakage. 
     
     
         10 . An aluminum plastic film produced by implementing the method as claimed in  claim 1 .